3500/42 Operation and Maintenance
Configuration Information
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3.1.4
Differential Expansion Channel Options
This section discusses the Configuration Considerations and the Rack
Configuration Software screens associated with the Differential Expansion
Channel.
3.1.4.1
Differential Expansion Channel Configuration Considerations
Consider the following items before configuring a Differential Expansion Channel:
- None of the differential expansion channel transducers are able to support
discrete Internal Barrier I/O modules.
- The "No Keyphasor" option is automatically selected for this channel type.
No Keyphasors are required.
- The Differential Expansion Direct full-scale range is dependent upon the
transducer type.
- The Zero Position voltage range is dependent upon the direct full-scale
range.
- Monitors must be configured in channel pairs (for example, Channels 1 and
2 may be configured as Differential Expansion and Channels 3 and 4 may
be configured as Thrust Position).
- When a full-scale range is modified, the setpoints associated with this
proportional value should be readjusted.
- The Latching OK Mode and the Timed OK Channel Defeat options are not
compatible.
- If a Non-Standard transducer is selected, the setpoint OK limits are set to
±1 volt from the Upper and Lower OK limits that are selected.
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